Rigger&#39;s truck.



PATENTED JULY 21. 1908.

' J. ROSS.

' RIGGERS TRUCK.

APPLICATION TILED JAN. 8, 1908.

2 SHEETS-SHEET 1.

J HA Wihauoeo 110 893,658. PATENTED JULY 21, 1908. J. ROSS. RIGGERSTRUCK. APPLICATION FILED JAN. 8, 1908.

2 SHEETS-SHEET 2,

having a downwardly extended tu of a portion oi 5 such adjustment UNMEEDiron-N nose; or irnimnntrnm, PENNSYLVANIA.

message TRUCK.

no; ses ess. specification of Letters Patent. Patented July 21, 1908;

A ucmonniea-Januar 3, i908. Seria1Nm409/763.

To all whom it may come ma Be it known that 1, JOHN Ross, a citizen ofthe United States, and a resident oi the city and county ofPhiladelphia, State of Pennsylvania, have invented an Improvement inltiggers Trucks, of which the follow lar upwardly ing is aspecification. 1

My invention has reference to riggers trucks, and consists of certainimprovements which are fully set forth inv the following specification,and shown in the accompanying drawings; which form apart thereo Theobject of-n y; invention is to provide a form of riggers truck whichwill permit of of its several parts as will adapt it for use undervaried conditions, and which, moreover, will give it capacity for.manipulation that will enable the most diflicult loads to be handledwith facility, whether in close quarters or on the read.

My invention consists otan up or l'rame ular portion, combined with alower frame in which a central supporting wheel is journaled, said frameextending upward and concentric with the tubular portion of the upperframe.

i\ly invention further consists of the foregoing structure whenals'oprovided with a' serew threaded connection between the ;tubularpart ,of. the up er frame and the lower frame;whereby the orm'er may beadjusted upon the latter to diir'erent elevations.

My ini ention; also comprehends details of constritetion which, togetherwith the featni emaboy-e s ec'iiied ,,will be better understood by; reeren'ce' to the drawings, in' \vhicl1';-"

l l l polar and provided with a downwardly extending tu threaded uponits interior. C is a art of the lower frame and is pro- :vided wit acylindrical base C and a tubuextending part screw-threaded upon itsexterior for adjustably engaging the tubular part B, as clearly shownin-Fig. 1. D is the other part of the lower frame-and is formed of acircular base with an upwarchcylindrica part fitting within part C, soas to be adjustable axially therein; ,The parts C and'D constitute thelower frame of the truck, and if desired may be secured together as aunit by means of bolts M, which extend through notches c in the flangesC and D. There may be many men of such notches in the flanges C than inthe flange I), one or more being sufficient in the latter. By employingnotches instead of holes, it is easier to remove the bolts whennecessaryflshould the parts he I ammed.

F is the central sup orting w eel and is secui'ed to a shaftE w ich isjournaled at (3 o to the under part of the frame D. The end of the shaftE may be mhde square for the attachment of a wrench or operating, 1e,er.

ular portion B preferablyscrew plate D provided I The wheel F extendswell up into the tubular spacewithin the lower frame 1) so as to bringthe top of the truck as possible. The upper frame A B may be adjusted toany ,'desired height above the wheel F by rotating it byj neans of awrench shown in-Fig. top plate'or turn table upper frame A,- and may be;means of a downwardly centered by extending central Figure 1 is asectional elevationjof a rigk, lug g at the center. I This top plate mayhave truck embodying my invention; Fig. 2

isa sectional plan'view of the same taken on line 22 of Fig. 1 Fig. 3 isa sectionalyiew Fig. 1 on line 3'3; Fig. 4 is a plan view of the riggerstruck; Fig. 5 is a sectional elevation of a modified form of my improvedtruck; Fig. 6 is a se'ctionalplanj viewon line 66; Fig. 7 IS anelevation of another modification of my inyention; Fig. 8-

is a sectional plan view of the same on line the plate upon'op S8; Fig.9 is a sectional elevation of still anothermodification of my invention,,show-' ing the employment of two supporting wheels instead of one; andFig'. 10 is'an end view of an operating wrench.

his the upper frameend preferably cirupper frame A may projections i tobite intolthe ti material I constituting the support or sill for theload. These timbers I may stringers arranged under the sides of a house,for example, and may besupported two or more of Y ble chain dogs J maybe-e'inployed'for hold ing'tlie timber llcentrigillthesedogs beinghingeto the perip ery of dsite sides. The top plate G may be secure firmlytothe up A by means of bolts H which exten through slots G inithe toplate, and A in the top frame, as more full .4. In this manner, the topplate G as 'awhole as low down I upon the lower frame Gr mayrest uponthe her or other.

he, sills or upon the to plate,

er frame.

y indicated in Figs. 1 and and the r be rigidly secured. to-' P I myimproved trucks; Flexi- 20 base D gether after proper adjustment hasbeen made. When the vertical adjustment is being made, the bolts H mustbe removed, and the upper frame A B turned with the wrench shown in Fig.10, after which the bolts H are replaced. 4 In Fig. 5, the screwadjustment between the parts B and O is omitted, and consequently. theparts A B C ,C are merged into a single frame A in which thelower frameD is j ournaled in precisely the same manner as said lower. frame isjournaled in the 1 frame C C.. A

In the construction shown in Figs. 7-and 8,

the same general structure is followed, but in this case the axle ofstead of being journaled in fixed bearings on the bottom of the frame Dis extra frame D and springs L, of which four sets may be employed. I Inthis'mannerj'thetruck body is spring-supportedon the central roller F.

In some cases where ticles is required over long distances and wherelarger supporting wheels are necessary to sustain the greater load, thetruck ma be formed as indicated. in Fig.v 9, in which t..1ere are twosupporting wheels F F and a bearing structure arranged between them on.the

bottom of the lower frame D.

When the load is to .be conveyed in a straight path, the bolts M areemployed; but

when thetravel is to be on a curve or in an 5 irregular course, then thebolts M are re-' moved andthe part D Df'is turned. to-change the axis ofthe roller to suit the direction of travel desired 40 details. may bemodiiie lwithout departing from the spirit of the invention. Having nowdescribed my invention, what I claim as new, and desire to secure byLetters Patent, is c 1.. In a riggers truck, an upper frame for-supporting the load, and a lower frame connected to the upper frame bya screw-threaded, joint having a vertical axis and by which the' upperframe may be vertically adjusted upon the lower frame, combined with. acentral roller having an axle joi'lrnaled in the lower frame. a 2. n ariggers truck, an upper frame for ,supporting the load, and a lowerframe con nected to the upper frame by a screwdlnemled joint having avertical axisand by which the upper frame may be vertically adjustedupon the lower frai'ne provided wit-ha pivoted portion, combined witha'centralroller having an axle journalcd in the pivoted portion of thelowcr frame.

3. In-a riggers truck, an upper frame for supporting the load, and alower frame connected to the u ppcr frame by a sm'ew-thrcad- 55 ed jointhaving a vertical axis and by which the roller'or wheel in journaled inan which is supported from a; of the frame D by means of bolts K theconveyance of'ar While I prefer the construction shown,the i said lowerframe being combined with a lower the upper'frame may be verticallyadjusted upon t e lower frame said lower frame being provided. with apivoted portion, combined with a central roller having an axlejournal'ed in the pivoted portion of the lower frame, and means forsecuring the pivoted portion of the lowei" frame in various positions ofcircumferential adjustment.

4. In a riggers truck, an upper frame for supporting the load, and alower frame connected to the upper frame by ascrew- Invaded joint havinga vertical axis and by which the upper frame may be vertically adjustedupon t 1e lower frame, combined with a central roller having an axlejournaled in the lower frame, and a top plate pivoted to the upper frameupon \vlnch'the load rests.-

5. In a riggers truck, an upper frame for supporting the load, and alower frame connected to the upper frame by a screwthreaded joint havinga vertical axis and by which the upper frame may be vertically adjustedupon the lower frame, combined with a central roller having an axlejournaled in the lower frame, a top plate pivoted to the upper frameupon which the load rests, and means on the top plate for holdingthc'load in'position thereon.

6. In a riggers truck, an upper frame for supporting the load, and alower frame connected to the upper frame by a scrcw-tln'caded jointhaving a vertical axis and by which the upper frame may be verticallyadjusted upon the lower frame, combined with a central roller having anaxle journalcd in the lower frame, a top plate )ivoted to the uppcrframe for sustaining the foad and detachable means for adjusting andholding the lop plate in different positions of adjustment on the u perframe.

'7. In a riggers truck, upper and lower frames having tubular partsengaging each other to form a sleeved joint-and by which the lower partis cntralimzdv upon the upper art, combined with a roller support forthe lbwer part, anda shaft carrying the roller and journaled in thelower "part and having one end extended beyond the franus for rotatingthe roller.

8. In a riggers truck, an upper frame haw ing a downwardly extendingtubular part, combined with a lower frame extending up ward within thetubulalr part and. circumfercntially adjustable therein and having a lowcr part connected by springs and a rolling support having a shaftjournalcl'l upon the lower part of the lower frame whereby the upperfrzme and. the load are spring sup ported.

9. in a riggers truck, an upper frame having a downmirdly extendingtubular part,

frame extending upwafdfwithin. thc upper frame and made hol low in thecenter, combined with a roller extending partly upward into and shieldedby eeaeee the"lcwer frame, and an axle for the roller 'ournaled to thelower frame and extending lstera'll therefrom.

-10. n a riggers truclg-a turn-table, a lower frame, a roller journaledto the lower frame to support it, and means intermediate between theturn-table and lower frame for connecting said parts and adjusting theturntable vertically reletively to the lower frame.

ll. In e riggers truck, a turn table, a lowerireme, e roller journaledto the lower frame to support it, and means intermediate of theturn-table and lower frame consisting of an. upper frame pivoted to theturn-tahle and screwed upon the lower frame for connecting said partsand adjusting the turn-table ver 'ticslly relsl'iively to the lowerframe.

12. In a riggers truck, the truck proper combined with a turn-tablehaving PIOJGG' tions upon which the load may rest, end dogs comprisingchains connected at one end to the turn-tahle end having spikes at theother end.

13. In a riggers truck, an upper frame having a downward tubular art, alower frame hollow in the center and aving an upward tubular pertengaging the tubular pert of the upper frame and forming a shoulderedengagement therewith, and a roller extending into the hollow centeroithe lower frame by e shaft which projects laterally beyond the lowerireme for rotating the roller and journeled to the lower pert of saidlower heme.

l t. in a riggers truck, upper and lower j frames having tubular partsengaging each other to form a sleeved joint and by which the lowerpartis centrelized upon the upper art, combined with e roller supportfor the ower part whereby radially adjusted relatively to each otherwithout changing their vertical positions, means for locking the framesin their relative adjusted ositions, and a shaft cztrrying the rollerand journaled in the lower part and having one end. extended Beyond theframes for rotating the roller.

15. In a riggers truck,=upper' and lower frames having tubular partsengaging each other to form a sleeved joint and by which the lower partis centralized upon the upper part, combined with a roller support forthe lower pert,e turn-table arranged upon the upper rreme, means forsecuring the turntable in fixed relation upon the upper frame whenrequired, and a shaft carrying the roller and journaled in the lowerpart and having one end extended beyond the frames for rotating theroller.

16. In a riggers truck, the, domhination of an up er flanged tubularframe, a lower flange tubular frame having its tubular part sleeved withthe tubular part of the upper frame, a supporting roller device, theroller device journaled on the bottom art of thelower frame, and meansfor adustehly clamping the flanged part of the lower frame to the up erframe.

l'n'testi'mony of w ch invention, I have hereunto set my hand.

JQHN ROSS.

i'Vitnesses:

R. M. KELLY,

' M. F. DnrsooLL.

the two frames may be p a shaft for I

